Use os.path.join() instead of hardcoding /

upload.py

 #!/usr/bin/env python
 #
 # Copyright 2007 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
@@ skipping 60 matching lines @@
 
 def GetEmail():
   """Prompts the user for their email address and returns it.
 
   The last used email address is saved to a file and offered up as a suggestion
   to the user. If the user presses enter without typing in anything the last
   used email address is used. If the user enters a new address, it is saved
   for next time we prompt.
 
   """
-  last_email_file_name = os.path.expanduser("~/.last_codereview_email_address")
+  last_email_file_name = os.path.expanduser(
+      os.path.join("~", ".last_codereview_email_address"))
   last_email = ""
   prompt = "Email: "
   if os.path.exists(last_email_file_name):
     try:
       last_email_file = open(last_email_file_name, "r")
       last_email = last_email_file.readline().strip("\n")
       last_email_file.close()
       prompt = "Email [%s]: " % last_email
     except IOError, e:
       pass
@@ skipping 274 matching lines @@
       A urllib2.OpenerDirector object.
     """
     opener = urllib2.OpenerDirector()
     opener.add_handler(urllib2.ProxyHandler())
     opener.add_handler(urllib2.UnknownHandler())
     opener.add_handler(urllib2.HTTPHandler())
     opener.add_handler(urllib2.HTTPDefaultErrorHandler())
     opener.add_handler(urllib2.HTTPSHandler())
     opener.add_handler(urllib2.HTTPErrorProcessor())
     if self.save_cookies:
-      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
+      self.cookie_file = os.path.expanduser(
+          os.path.join("~", ".codereview_upload_cookies"))
       self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
       if os.path.exists(self.cookie_file):
         try:
           self.cookie_jar.load()
           self.authenticated = True
           StatusUpdate("Loaded authentication cookies from %s" %
                        self.cookie_file)
         except (cookielib.LoadError, IOError):
           # Failed to load cookies - just ignore them.
           pass
@@ skipping 991 matching lines @@
   try:
     RealMain(sys.argv)
   except KeyboardInterrupt:
     print
     StatusUpdate("Interrupted.")
     sys.exit(1)
 
 
 if __name__ == "__main__":
   main()